Landing/Positioning System
2-77
2
Motion 4000
Verify that the tape is longitudinally aligned with the sensor face.
5. Check proper alignment of tape vs. sensor. Correct any angular offset.
Figure 2.29 Positioning Tape Longitudinal Alignment
6. On cartop inspection, move the car to several points in the hoistway. Verify that tape-to-
sensor alignment remains satisfactory in each position.
7. After completing installation, clean the tape. Beginning at the top of the hoistway, move
down the full travel distance pulling the tape through a soft, dry cloth. Repeat this pro-
cess before putting the elevator into service after completing installation.
Hoistway Learn, Elgo
Please refer to “ELGO Encoded Magnetic Tape” on page 3-3.
Periodic Maintenance Required
Inspect and clean the sensor and encoded tape as part of your car top routine or at minimum
intervals of 6 months for contract speeds below 400 FPM or 4 months for contract speeds above
400 FPM.
1. Check that the sensor is properly aligned and that the tape is running through the reader
slot with the polymer guide pressing firmly against the steel backing and with no contact
on the magnetic material, as described in this instruction.
2. Check for abnormal wear on both the tape and the guide.
3. Open the sensor head and check for debris in the guide-way.
4. Check that the bottom spring attachment provides adequate tape tension (spring
stretched about 2” (50 mm) beyond its relaxed length, about 16 lbf.).
5. Clean the tape with a soft cloth.
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